rActionBar 

hooksecurefunc('ActionBarController_UpdateAll', function()  
    for i = 1, 12 do
        local button = _G['ActionButton'..i]
        local overrideButton = _G['OverrideActionBarButton'..i]
        local _, spellID
        if overrideButton then
            _, spellID = GetActionInfo(overrideButton.action)
        end
 
        if ((HasOverrideActionBar() or HasVehicleActionBar()) and (spellID and spellID > 0)) or (not HasOverrideActionBar() and not HasVehicleActionBar()) then
            button:SetAttribute('statehidden', false)
            button:Show()
        else
            button:SetAttribute('statehidden', true)
            button:Hide()
        end
    end
end)